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Finding the Fourth Proportional to 115,617.68, 159,549.02 and 64,630.52

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Solution

The fourth proportional to 115,617.68, 159,549.02 and 64,630.52 is: 89,188.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,617.68 : 159,549.02 = 64,630.52 : x
  2. Step 2: Convert to fraction form
    115,617.68/159,549.02 = 64,630.52/x
  3. Step 3: Cross multiply
    115,617.68x = 159,549.02 × 64,630.52
  4. Step 4: Simplify right side
    115,617.68x = 10,311,736,128.09
  5. Step 5: Solve for x
    x = 10,311,736,128.09/115,617.68
  6. Step 6: Final answer
    x = 89,188.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.